On 4 August 2026, US District Judge Robert J. Shelby of the US District Court for the District of Utah granted the State of Utah summary judgment in Kalshi Inc. v. Utah, ruling that the Commodity Exchange Act (CEA) does not preempt the state's ability to enforce its anti-gambling laws against Kalshi's sports-event contracts. Utah becomes the first US state to secure a final federal judgment against the prediction-market platform. Kalshi has announced it will appeal to the United States Court of Appeals for the Tenth Circuit.
Before 4 August, Kalshi's judicial map was mixed: federal courts in New Jersey, Tennessee, Arizona and Minnesota had granted preliminary injunctions in its favour on the theory that event contracts are derivatives under the exclusive federal jurisdiction of the Commodity Futures Trading Commission (CFTC). Maryland, Nevada, Ohio, New York and Wisconsin leaned the other way, toward state gambling jurisdiction. Judge Shelby's decision is the first of these rulings issued at summary-judgment stage rather than through a preliminary injunction, and therefore carries materially higher precedential weight for the Tenth Circuit.
We treat this ruling as a turning point in the US prediction-markets-vs-gambling debate. Judge Shelby rejected every theory of preemption Kalshi advanced: neither express nor implied preemption under the CEA blocks Utah from protecting its residents against unregulated gambling. That logic tracks the position ANJ and ADM took in Europe: the July block of Polymarket in France and Italy rested on the same foundation — event contracts on uncertain outcomes, sold to ordinary consumers, are wagers.
In our view, the verdict triggers a chain of consequences. First, the July 2026 New York Attorney General lawsuit against Kalshi gains fresh ground: if a federal judge has already ruled a state may enforce its anti-gambling laws, the exclusive-federal-jurisdiction argument stops working as a shield. Second, the Tenth Circuit, where Kalshi is appealing, becomes the seventh federal circuit hearing prediction-market appeals, increasing the odds that the US Supreme Court eventually takes the question.
We note that the same logic is already deployed by regulators in three jurisdictions relevant to our audience. In Europe — ANJ and ADM. In Brazil — the debate over PL 2258/2026 to ban online casino runs the same test: is an algorithmic, non-deterministic product a wager in substance? In Italy — the ADM Portale delle segnalazioni live from 10 September 2026 will handle complaints on every product ADM classifies as gambling, event contracts included.
In our view, the headline for EU, Ukrainian and Brazilian players is this: the legal definition of gambling is narrowing in favour of the regulator's interpretation rather than the platform's self-declared status. That means prediction markets such as Polymarket or Kalshi, which have positioned themselves as financial platforms, are being pushed legally into the licensing, KYC, wagering and self-exclusion regime. The practical effect: availability of these platforms in Europe and Latin America will keep shrinking.
What exactly did the Utah court rule on Kalshi on 4 August 2026?
Judge Robert J. Shelby granted Utah's motion for summary judgment and denied Kalshi's motion for a preliminary injunction. The court held that the Commodity Exchange Act — the federal statute governing commodities derivatives — does not prevent Utah from applying its anti-gambling statutes to Kalshi's sports-event contracts. This is the first final federal judgment of its kind against Kalshi.
Does the ruling affect European players?
Directly, no: the decision operates only within Utah and binds only within the Tenth Circuit. Indirectly, yes. Judge Shelby's legal reasoning tracks the ANJ and ADM approach in Europe, which already blocked Polymarket in France and Italy in July 2026. That strengthens the European regulators' hand in future disputes with prediction-market operators.
What happens during Kalshi's appeal to the Tenth Circuit?
Kalshi will appeal to the United States Court of Appeals for the Tenth Circuit — the federal appellate court covering Utah, Wyoming, Colorado, Kansas, New Mexico and Oklahoma. A Tenth Circuit decision is expected within 6 to 12 months. Whatever it says, the outcome will deepen a split with other circuit courts of appeals and make Supreme Court review more likely.
How should players in the EU, UK and Brazil treat prediction markets right now?
Prediction markets like Kalshi and Polymarket are unavailable in Europe through ISP-level blocks and in Brazil through SPA-ordered blocks. We think trying to circumvent the blocks with a VPN removes the player's legal protection: within the EU and Brazil the player has no KYC, self-exclusion or refund lever. Use only operators licensed in your jurisdiction — PlayCity in Ukraine, MGA, UKGC, GGL, ADM in the EU, SPA in Brazil.
As of 9 August 2026, if you use a prediction-market platform, check whether it holds a licence from your jurisdiction's regulator. Kalshi is licensed as a CFTC-designated contract market in the US but holds no European or Ukrainian gambling licence. Polymarket is unlicensed anywhere in the EU and is blocked by ANJ, ADM and SRIJ. If you hold an active balance on such a platform, withdraw it; in a dispute with the platform you will have no European regulator to escalate to.
We expect the Tenth Circuit review during 2027, and possibly a US Supreme Court review, to draw the final line between federal and state jurisdiction over prediction markets. Until then, European and Latin American regulators will keep blocking — MGA, UKGC, GGL, ADM, ANJ, SPA and PlayCity already hold sufficient legal grounds. Wagering is for adults (18+) and not a way to earn a living; if you sense a risk of addiction, use GAMSTOP in the UK, OASIS in Germany, RUA in Italy, the ANJ register in France, Spelpaus in Sweden, SPA self-exclusion in Brazil, or Ukraine's 0800 500 4321 support line.